books.google.ca - To observe a dog's guilty look. to witness a gorilla's self-sacrifice for a wounded mate, to watch an elephant herd's communal effort on behalf of a stranded calf--to catch animals in certain acts is to wonder what moves them. Might there he a code of ethics in the animal kingdom? Must an animal be human...https://books.google.ca/books/about/Good_Natured.html?id=L5n8znkgL9UC&utm_source=gb-gplus-shareGood Natured
